<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  
</body>
<script>
  const arr=['张三','李四','王五']
  const newArr=arr.map(item=>{
    return {uname:`${item}`,age:18}
  })
  console.log(newArr);
  // console.log(JSON.stringify(newArr));
</script>
</html>